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PM / sleep: Refactor filesystems sync to reduce duplication

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Create a common helper to sync filesystems for system suspend and
hibernation.

Signed-off-by: Harry Pan <harry.pan@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Harry Pan
2019-02-25 20:36:41 +08:00
committed by Rafael J. Wysocki
parent 74a1dd86d1
commit b5dee3130b
5 changed files with 19 additions and 16 deletions
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3
include/linux/suspend.h
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@@ -425,6 +425,7 @@ void restore_processor_state(void);
/* kernel/power/main.c */
extern int register_pm_notifier(struct notifier_block *nb);
extern int unregister_pm_notifier(struct notifier_block *nb);
extern void ksys_sync_helper(void);
#define pm_notifier(fn, pri) { \
static struct notifier_block fn##_nb = \
@@ -462,6 +463,8 @@ static inline int unregister_pm_notifier(struct notifier_block *nb)
return 0;
}
static inline void ksys_sync_helper(void) {}
#define pm_notifier(fn, pri) do { (void)(fn); } while (0)
static inline bool pm_wakeup_pending(void) { return false; }